<em>Nissan Almera</em> crankshaft sensor pinout: diagram, wire colors and diagnostics

The crankshaft position sensor (CPS) is one of the key elements of the engine management system Nissan Almera. Its incorrect operation leads to ignition failures, loss of power or complete engine failure. If you encounter errors P0335 or P0336, the first thing you should do is check the pinout of the sensor connector. In this article we will analyze wire color scheme, their purpose and connection features for models Almera N16 (2000–2006) and Almera G15 (2012–2019).

Pinout errors often occur after wiring repairs or sensor replacement. For example, mixed up contacts can cause false signals on ECU, which will lead to detonation or unstable engine operation at idle speed. We will take a detailed look at how to avoid such problems using original circuits from Nissan and practical advice on diagnostics.

Why do you need a crankshaft sensor pinout?

The crankshaft sensor generates a pulse signal that ECU used to synchronize fuel injection and ignition. If the signal is distorted or missing, the engine Almera can:

• 🔴 Do not start at all (no spark or injection).
• 🔴 Operate intermittently at low speeds.
• 🔴 Show errors P0335 ("Crankshaft sensor circuit") or P0340 (“Phase sensor”).
• 🔴 Twitch during acceleration due to incorrect angular position of the shaft.

Pinout helps:

• ✅ Connect the sensor correctly after replacement.
• ✅ Check the integrity of the wires with a multimeter.
• ✅ Eliminate errors when repairing a harness or connector.

On Nissan Almera The crankshaft sensor is usually located near the flywheel or alternator drive pulley. Its connector has 3 contacts, but their purpose may differ depending on the year of manufacture and engine type (QG15DE, QG16DE, HR15DE).

Crankshaft sensor pinout diagram Nissan Almera N16 (2000–2006)

On models Almera N16 with engines QG15DE And QG16DE An inductive crankshaft sensor is used. Its connector has three wires with the following pinout:

Contact number	Wire color	Purpose	Voltage (when tested)
1	Red (or pink)	Power (+12 V)	11.5–12.6 V
2	Black (or brown)	Weight (–)	0 V
3	Green/white	Signal output	0.1–0.9 V (at idle)

Important: On some versions of Almera N16, the color of the signal wire may be yellow with a black stripe. Always refer to the original diagram for your VIN!

To check the sensor:

1. Disconnect the connector from the sensor.
2. Set the multimeter to mode DC 20V.
3. Connect the probes to the contacts 1 (red) And 2 (black) - must be 12 V.
4. Connect the probes to 3 (green) And 2 (black), then crank the engine with the starter. Power surges should appear on the screen 0.1–0.9 V.

Disconnect the sensor connector|Check the power (12 V between pins 1 and 2)|Check the signal (voltage surges on pin 3)|Visually inspect the sensor for cracks and corrosion-->

Crankshaft sensor pinout Nissan Almera G15 (2012–2019)

On Almera G15 with engine HR15DE The crankshaft sensor has a different design - it Hall type (not inductive). This means that it requires external power to operate. 5 V from the ECU. Connector pinout:

Contact number	Wire color	Purpose	Notes
1	Red/white	Power (+5 V)	Supplied from the ECU
2	Black	Weight (–)	Common with ECU
3	Blue/white	Signal output	Digital signal (0–5 V)

Diagnostic features:

• 🔧 Food 5 V must be present when the ignition is on (it is not necessary to start the engine).
• 🔧 The signal wire gives out digital signal, and not analog, as on N16.
• 🔧 If the signal wire breaks, the ECU records an error P0335.

If the sensor is OK, but the engine does not start, check:

• ⚡ Integrity of the harness from the sensor to the ECU (flywheel wires often fray).
• ⚡ Availability 5 V on the first contact (if not, the problem is in the ECU or fuse).
• ⚡ Condition of the toothed disc on the crankshaft (may be damaged or contaminated with metal shavings).

How to check the crankshaft sensor without special instruments?

If you don't have a multimeter or oscilloscope at hand, you can use alternative methods diagnostics They are less accurate, but will help eliminate obvious faults.

Method 1: Replace with a known good sensor

• 🔧 Take the sensor from another Almera (or new one) and install it.
• 🔧 If the engine starts, your sensor is faulty.

Method 2: Check winding resistance (for inductive sensors N16)

1. Disconnect the sensor connector.
2. Measure the resistance between signal And massive contacts.
3. Normal value: 500–700 Ohm (for QG15DE/QG16DE).

Method 3: Visual Inspection

• 🔍 Check the sensor for cracks, chips or traces of oil.
• 🔍 Inspect the connector for oxidation (green plaque on the contacts).
• 🔍 Make sure there are no metal shavings between the sensor and the toothed disk.

What to do if the sensor is working, but the error remains?

If the crankshaft sensor is OK, but there is an error P0335 continues to appear, the problem may lie in:

1. Wiring — frayed or shorted wires of the connector.
2. ECU — malfunction of the control unit (less often).
3. Serrated disc - damaged or worn teeth.
4. Engine weight - poor contact with the body.

For accurate diagnostics, you will need an oscilloscope or scanner that supports real-time viewing of parameters (for example, Launch X431 or Delphi DS150E).

Common errors when connecting the crankshaft sensor

Even experienced car owners sometimes make mistakes when working with the crankshaft sensor. Here are the most common:

⚠️ Attention: If you confuse signal And nourishing wires, the ECU may fail! On Almera G15 this is especially critical since the sensor operates from 5 V - feed 12 V its internal circuits will burn out.

Error 1: Incorrect sensor position

• 🚫 The sensor is installed too far from the toothed disk (the gap should be 0.5–1.5 mm).
• 🚫 The sensor is skewed or not secured tightly (vibrations distort the signal).

Mistake 2: Ignoring Polarity

• 🚫 On Almera N16 can be accidentally mixed up food And mass, if you do not follow the colors of the wires.
• 🚫 On Almera G15 connection error 5 V will lead to a short circuit.

Error 3: Damage to the connector

• 🚫 When the connector is disconnected, the latches often break and the contact becomes unreliable.
• 🚫 Oxidation of contacts (especially in high humidity conditions).

To avoid problems:

• ✅ Always take a photo of the connector to disconnection.
• ✅ Use dielectric grease to protect contacts.
• ✅ Check the gap between the sensor and the disc plastic probe (not metal!).

💡

On the Almera G15, the crankshaft sensor is not interchangeable with the camshaft sensor! They have the same connectors, but different internal circuits. Installing the wrong sensor will result in an error P0340.

Where to buy a crankshaft sensor for Nissan Almera?

When choosing a new sensor, it is important to consider:

• 🔹 Article — original numbers for Almera:
  • 23731-4M000 (for N16, inductive).
  • 23731-EW00A (for G15, Hall).
• 🔹 Manufacturer - reliable analogues:
  • Bosch (number 0 261 210 115 for N16).
  • Denso (series 550-0101 for G15).
  • Hella (number 6PT 009 101-021).
• 🔹 Compatibility - sensors from Nissan Micra or Renault Logan may fit, but require checking the pinout!

Where to buy:

• 🛒 Official dealers - guarantee of the original, but high price (from 3,500 rubles).
• 🛒 Online stores (Exist.ru, Autodoc) - cheaper, but there is a risk of running into a fake.
• 🛒 Showdown - a budget option (from 800 rubles), but the sensor may be worn out.

⚠️ Attention: There are many fake sensors on the market Bosch And Denso for Almera. Original parts have a laser engraved logo and clear markings. Counterfeits are often sold without packaging or with blurred labels.

Replacing the crankshaft sensor yourself: step-by-step instructions

Replacing the sensor with Nissan Almera does not require special tools, but it is important to follow the sequence of actions.

Required tools:

• 🔧 Key on 10 mm (or head with extension).
• 🔧 Screwdriver with a flat blade (for the connector lock).
• 🔧 Multimeter (for checking after installation).
• 🔧 Clean rags and WD-40 (if the bolt is stuck).

Procedure:

1. Disable negative terminal battery
2. Disconnect the sensor connector by pressing the latch.
3. Remove the sensor mounting bolt (it is located on the side of the flywheel).
4. Carefully remove the sensor without damaging the O-ring.
5. Install the new sensor, maintaining the gap 0.5–1.5 mm.
6. Secure the bolt and connect the connector.
7. Connect the battery and check the engine operation.

After replacement:

• 🔹 Reset errors via diagnostic scanner (eg ELM327).
• 🔹 Check for oil leaks on the sensor (the O-ring must be intact).
• 🔹 Start the engine and make sure the error P0335 doesn't appear again.

💡

If after replacing the sensor the engine still does not start, check ECU fuse (on Almera N16 this is a fuse №10 on 10 A in the block under the hood).

FAQ: Frequently asked questions about the crankshaft sensor Nissan Almera

Is it possible to drive with a faulty crankshaft sensor?

No. The crankshaft sensor is a critical element. Without its signal, the ECU cannot determine the position of the shaft, so the engine either will not start or will work intermittently, which will lead to damage to the catalyst or breakdown of high-voltage wires.

How to distinguish an inductive sensor from a Hall sensor?

On Almera N16 used inductive sensor (2 wires + screen), and on G15 — Hall's (3 wires: power, ground, signal). Also, the inductive sensor has a metal core, while the Hall sensor has a plastic housing with a microcircuit.

What to do if an error appears after replacing the sensor P0340?

Error P0340 associated with camshaft sensor, not the crankshaft. Possible reasons:

• The camshaft sensor connector is incorrectly connected.
• The wiring harness between the sensors is damaged.
• The timing marks are knocked off (check that the marks on the pulleys match).

Is it possible to clean the crankshaft sensor?

Perform mechanical cleaning of the sensor not recommended - this may damage the sensor element. However, you can carefully remove metal shavings from the end of the sensor soft brush (no solvents!). If the sensor is covered with oil, it is better to replace it.

What resistance should the crankshaft sensor have? Almera N16?

For an inductive sensor (N16) normal winding resistance: 500–700 Ohm. If the indicator is lower 400 Ohm or higher 900 Ohm, the sensor is faulty. Hall sensor (G15) is checked only by voltage (power 5 V, signal 0–5 V).